The focus of the sensor network community on energy-efficiency has produced a string of novel MAC, routing, and data-aggregation protocols. Their power consumption h as mainly been assessed through simulations, i.e. by counting the fraction of time spent in sending, receiving, and computing, and multiplying that by figures taken from data sheets or isolated (single-node) power measurements. In contrast we pre s nt PowerBench, a 24-node testbed capable of recording the powe r consumption of all… CONTINUE READING